Pest and beneficial complex in organic viticulture at the conditions of Gokceada Island

Population densities of harmful and predatory insects have been compared in six table (Trakya İlkeren, Alphonse Lavallée, Tekirdağ Çekirdeksizi, Cardinal, Italia, Amasya beyazı x 28/259-1) and six wine (Cabernet Sauvignon, Merlot, Syrah, Kalabaki, Sauvignon Blanc, Özer Karası) grape varieties in Gokceada between 2008 and 2011. No difference was determined among table grape varieties. Trakya llkeren has been the most suitable grape variety for Gokceada as it is rarely infested by the pests. Population density of Colomerus vitis Pgst. was statistically different in wine varieties in 2010. Cabernet Sauvignon has continuously been infested by the pest. Arboridia adanae Dlabola and Thrips spp. were harmful in Cabernet Sauvignon in 2011. Merlot has been infested with higher populations of insect pests in some years. Hence, Cabernet Sauvignon and Merlot should not be preferred in Gokceada. Kalabaki had the lowest population density. Effect of four combinations of green manure, farm manure and olive cake compost was observed on the population density of harmful and beneficial insects on Trakya Ilkeren and Cabernet Sauvignon. The combinations tested had no important effect on the population density of insect pests and predators. Organic fertilization program should be selected according to what grape and vine tree need

Studies on determination of harmful fauna in the fig orchards in Aydin province (Turkey). Aydin ilinde incir agaclarinda saptanan zararli turler. (in Turkish).

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Egg parasitoids of Lobesia botrana (Den. & Schiff.) (Lepidoptera: Tortricidae) in the vineyards of Izmir and Manisa Provinces in Turkey

The study was carried out to determine egg parasitoids of Lobesia botrana (Den. & Schiff.) on Sultani Cekirdeksiz grape in Izmir and Manisa between 2009–2011. Both eggs found on grape berries in vineyards and the eggs reared in the lab and mounted onto bunches were used to determine egg parasitoids. Minimum 50 lab-reared eggs were mounted at the level of bunches in each vineyard. These eggs were re-collected after 2–4 days and maintained in the climate room for checking daily if parasitized. Parasitism rate by Trichogramma euproctidis Girault (Hymenoptera: Trichogrammatidae) on mounted L. botrana eggs was determined as 8% in conventional vineyard of Sarıgöl in 2009, whereas it was found 10.91% in conventional vineyard of Salihli, 5% in organic vineyard of Alaşehir and 1.33% in integrated vineyard of Menemen in 2010. Natural parasitism of L. botrana eggs on berries by T. euproctidiswas determined as 10% and 16% in integrated vineyard of Alaşehir in 2009 and 2010, respectively. T. euproctidisparasitized 38.6% of eggs whereas T. brassicae(Bezdenko) parasitised 1.44% of eggs on the berries in 2011. T. euproctidis and T. brassicae have been determined on the eggs of L. botrana in the Aegean Region, Turkey for the first time

Isonet LTT, a new alternative material for mating disruption of

European Grapevine Moth (EGVM), Lobesia botrana (Den. & Schiff.) (Lepidoptera: Tortricidae) is the key pest of grape in Turkey. The efficacy of Isonet LTT has been tested against L. botranain comparison with registered Isonet L dispensers in Manisa and Canakkale, Turkey. One chemically treated vineyard was used to compare infestation levels for each location. By the emergence of the first EGVM adult, ∼320 Isonet LTT and 650 Isonet L dispensers/ha -including borders- were installed once a year. EGVM adults have been monitored in all plots by pheromone traps from the beginning of the flight until harvest. Infestation rates were compared. We indicated that both Isonet LTT and Isonet L dispensers showed excellent performance against the pest without additional treatment in 2015 and 2016. Average infestation rates of EGVM were below the threshold of 6%. EGVM infestation has been maintained at zero level by sprayings five and four times in the chemical treated vineyard in 2015 and 2016 in Manisa. Isonet LTT dispensers released 340 and 370 mg pheromone until harvest (19 August 2015 and 16 August 2016) in Manisa, whereas they released 360 and 410 mg of until harvest (27 August 2015 and 22 August 2016) in Canakkale, respectively

Isonet LTT, a new alternative material for mating disruption of Lobesia botrana (Den. & Schiff.) in Turkey

European Grapevine Moth (EGVM), Lobesia botrana (Den. & Schiff.) (Lepidoptera: Tortricidae) is the key pest of grape in Turkey. The efficacy of Isonet LTT has been tested against L. botranain comparison with registered Isonet L dispensers in Manisa and Canakkale, Turkey. One chemically treated vineyard was used to compare infestation levels for each location. By the emergence of the first EGVM adult, ∼320 Isonet LTT and 650 Isonet L dispensers/ha -including borders- were installed once a year. EGVM adults have been monitored in all plots by pheromone traps from the beginning of the flight until harvest. Infestation rates were compared. We indicated that both Isonet LTT and Isonet L dispensers showed excellent performance against the pest without additional treatment in 2015 and 2016. Average infestation rates of EGVM were below the threshold of 6%. EGVM infestation has been maintained at zero level by sprayings five and four times in the chemical treated vineyard in 2015 and 2016 in Manisa. Isonet LTT dispensers released 340 and 370 mg pheromone until harvest (19 August 2015 and 16 August 2016) in Manisa, whereas they released 360 and 410 mg of until harvest (27 August 2015 and 22 August 2016) in Canakkale, respectively

Egg parasitoids of Lobesia botrana (Den. & Schiff.) (Lepidoptera: Tortricidae) in the vineyards of Izmir and Manisa Provinces in Turkey

39th World Congress of Vine and Wine -- OCT 24-28, 2016 -- Bento Goncalves, BRAZILWOS: 000390791700006The study was carried out to determine egg parasitoids of Lobesia botrana (Den. & Schiff.) on Sultani Cekirdeksiz grape in Izmir and Manisa between 2009-2011. Both eggs found on grape berries in vineyards and the eggs reared in the lab and mounted onto bunches were used to determine egg parasitoids. Minimum 50 lab-reared eggs were mounted at the level of bunches in each vineyard. These eggs were recollected after 2-4 days and maintained in the climate room for checking daily if parasitized. Parasitism rate by Trichogramma euproctidis Girault (Hymenoptera: Trichogrammatidae) on mounted L. botrana eggs was determined as 8% in conventional vineyard of Sarigol in 2009, whereas it was found 10.91% in conventional vineyard of Salihli, 5% in organic vineyard of Alasehir and 1.33% in integrated vineyard of Menemen in 2010. Natural parasitism of L. botrana eggs on berries by T. euproctidis was determined as 10% and 16% in integrated vineyard of Alasehir in 2009 and 2010, respectively. T. euproctidis parasitized 38.6% of eggs whereas T. brassicae (Bezdenko) parasitised 1.44% of eggs on the berries in 2011. T. euproctidis and T. brassicae have been determined on the eggs of L. botrana in the Aegean Region, Turkey for the first time